claude@clouddev1
52860c3267
Three more casts on "doing" pages:
- first-project reuses the quickstart cast (the create→insert→show tour)
- modes (new): a simple command, then `mode advanced` where the same command
also prints "Executing SQL: …" (the teaching echo — "learn the SQL underneath")
- undo-redo (new): insert two rows, `undo` (Y-confirm modal) backs one out,
`redo` restores it
Also fix the cast endings (review feedback): scripts ended by typing a `quit`
command, which — once the trim drops the shell exit — left a dangling "quit" in
frame with no payoff. End every cast with Ctrl-C instead (the app's quit key,
KeyCode::Char('c')+CTRL): it types nothing, so the cast ends cleanly on the
last content frame. Generator gains a `CtrlC` key; all six casts regenerated.
Convert the three pages to .mdx and embed. Build clean (26 pages); 6 casts.
65 lines
1.9 KiB
Plaintext
65 lines
1.9 KiB
Plaintext
---
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title: Simple and advanced modes
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description: How the playground's two input modes differ, how to switch, and the one-line escape hatch.
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sidebar:
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order: 3
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---
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import Demo from '../../../components/Demo.astro';
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The playground has two input modes. You can do everything a beginner needs
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in **simple mode**, and reach for **advanced mode** when you want full SQL.
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<Demo src="/casts/modes.cast" title="The same command in both modes — advanced mode also shows the SQL it runs for you." />
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## Simple mode (the default)
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Simple mode is a friendly, keyword-based command language designed for
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learning. Commands read close to English:
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```rdbms
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create table authors with pk author_id(serial)
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show data authors
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```
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Simple mode accepts these learning commands plus the app-level commands
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(like `save`, `undo`, and `help`). If you type raw SQL here, the playground
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gently points you at advanced mode instead of failing silently.
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## Advanced mode (SQL)
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Advanced mode accepts standard SQL — `SELECT`, `INSERT`, `CREATE TABLE`, and
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more — alongside the same app-level commands:
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```sql
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select title, published from books where published >= 2000 order by published;
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```
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Switch modes with the `mode` command:
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```rdbms
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mode advanced
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mode simple
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```
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The mode you leave a project in is remembered and restored the next time you
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open it, so a project set up for SQL practice reopens in advanced mode.
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## The one-line escape
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When you are in simple mode and want to run a single SQL statement without
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switching, prefix the line with a colon:
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```rdbms
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:select count(*) from books
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```
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That runs just this one line as SQL; you stay in simple mode afterwards.
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## Seeing the SQL behind a command
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When you run a simple-mode command in advanced mode, the playground prints
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the equivalent SQL beneath your command. It is a built-in way to learn how
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the friendly commands map onto real SQL — the same statements you could type
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yourself in advanced mode.
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